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The five proteins listed below were run on a cation exchange column at pH = 7...

The five proteins listed below were run on a cation exchange column at pH = 7

Cytochrome C pl = 10.7

Ribonuclease A pl = 9.5

Myoglobin pl = 7.4

Carbonic anhydrase pl = 6.0

Glucose oxidase pl = 4.2

Which of the following statements is TRUE?

A) Glucose oxidase and carbonic anhydrase will be separated in the low salt wash

b) Cytochrome C binds and then elutes first when the salt concentration is increased

c) decreasing the pH will elute the bound proteins from the column

d) ribonuclease A elutes after myoglobin when the salt concentration is increased

e) Glucose oxidase and carbonic anhydrase will bind to the column and elute at higher salt

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